Here’s a look at the total rainfall forecast for the next seven days. (Courtesy National Weather Service)

Courtesy National Weather Servic

Check the weather on your phone? This is likely the sight that greeted you.

The suite of computer models differs quite a bit on the amount of rain for tomorrow, and next week, but they have strong agreement that rain is coming. Our local model, shown here, thinks a solid 1-2" of rain likely tomorrow. Rain again on Sunday. pic.twitter.com/IU8hB60VVm

The suite of computer models differs quite a bit on the amount of rain for tomorrow, and next week, but they have strong agreement that rain is coming. Our local model, shown here, thinks a solid 1-2" of rain likely tomorrow. Rain again on Sunday. pic.twitter.com/IU8hB60VVm

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WASHINGTON — Hope you have a sturdy umbrella, definitely some rain boots, perhaps a poncho and … maybe an ark?

Friday is likely to be the last dry day for a while as an “ugly” weather pattern settles over the D.C. region, bringing rain showers and thunderstorms every single day for up to a week.

First, the good news: Friday is set to be a near-perfect day weather-wise, with highs in the upper 80s and low humidity and plentiful sunshine, according to StormTeam 4 meteorologist Chuck Bell.

But the rain arrives late Saturday morning, and a weekend washout seems likely.

Expect rain to start falling across the area about 10 a.m. to 11 a.m. Saturday, Bell said. The immediate area could get an inch of rain or more. And if you’re headed for the beach, be prepared: the coasts will seen even steadier rainfall.

A trough of low pressure “will remain nearly stationary” over the D.C. area through at least Wednesday, the National Weather Service said, bringing concentrated areas of showers and thunderstorms primarily during the afternoon and evening hours.

The weather service is forecasting the possibility of heavy rainfall with each passing shower and said it will monitor the potential for flooding and flash flooding.

The coming rain is a sharp change in the weather pattern for the month. Until a brief torrential downpour July 17, Reagan National Airport had recorded only a trace of rain for the entire month so far. That’s the only time on record, going back to 1871, that no measurable rain fell in the first 15 days of July, according to the National Weather Service.